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Add spec point comments for wrapper SDK proxy client #2033

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lawrence-forooghian
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@lawrence-forooghian lawrence-forooghian commented Feb 18, 2025

Resolves #2028.

Summary by CodeRabbit

  • Tests
    • Enhanced automated testing to verify that connection and channel states are consistently managed between components.
    • Confirmed that message subscriptions and unsubscriptions behave reliably.
    • Validated that HTTP requests include the correct header information, ensuring improved request handling and overall system stability.

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coderabbitai bot commented Feb 18, 2025

Walkthrough

This pull request adds a series of new tests to the WrapperSDKProxyTests class. The tests cover connection state propagation between the proxy client and its underlying client, synchronization of channel state and subscriptions, proper handling of message subscriptions, inclusion of the wrapper SDK agent header in various HTTP requests, and correct agent parameter behavior in protocol messages.

Changes

File Change Summary
Test/.../WrapperSDKProxyTests.swift Added tests to verify the propagation of connection and channel states between the proxy and underlying clients, ensure subscription behavior is maintained without unwanted side effects, validate that HTTP requests include the wrapper SDK agent in headers, and confirm agent parameter handling.

Sequence Diagram(s)

sequenceDiagram
    actor TestRunner
    participant ProxyClient as WrapperSDKProxy
    participant UnderlyingClient as RealTimeClient
    participant ProxyChannel as WrapperSDKProxyChannel
    participant UnderlyingChannel as RealTimeChannel

    TestRunner->>ProxyClient: Initiate connection state test
    ProxyClient->>UnderlyingClient: Establish connection
    UnderlyingClient-->>ProxyClient: Connected state update
    TestRunner->>ProxyClient: Verify connection propagation

    TestRunner->>ProxyChannel: Initiate channel attach/detach test
    ProxyChannel->>UnderlyingChannel: Propagate state change
    UnderlyingChannel-->>ProxyChannel: Channel state update
    TestRunner->>ProxyChannel: Validate channel state sync
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sequenceDiagram
    actor TestRunner
    participant ProxyClient as WrapperSDKProxy
    participant HTTPHandler as NetworkRequestHandler

    TestRunner->>ProxyClient: Trigger HTTP request test
    ProxyClient->>HTTPHandler: Send request with SDK agent header
    HTTPHandler-->>ProxyClient: Return HTTP response
    TestRunner->>ProxyClient: Verify header contains agent info
Loading

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Actionable comments posted: 0

🧹 Nitpick comments (3)
Test/Tests/WrapperSDKProxyTests.swift (3)

8-186: Consider adding edge case tests for state sharing.

While the current tests thoroughly cover the basic state sharing scenarios, consider adding tests for:

  • Error state propagation
  • Race conditions between proxy and underlying client
  • Connection/channel recovery scenarios

329-361: Optimize parameterized test helper.

The parameterizedTest_addsWrapperSDKAgentToRequests helper is well-designed but could be more efficient:

  1. Consider using a custom assertion message to make test failures more descriptive
  2. Extract the expected identifier construction to a separate helper method to avoid duplication
 func parameterizedTest_addsWrapperSDKAgentToRequests(
     test: Test,
     expectedRequestCount: Int = 1,
     performRequest: @escaping (ARTWrapperSDKProxyRealtime) -> Void
 ) throws {
     // ... existing code ...
-    let expectedIdentifier = [
-        "ably-cocoa/1.2.39",
-        ARTDefault.platformAgent(),
-        "my-wrapper-sdk/1.0.0"
-    ].sorted().joined(separator: " ")
+    let expectedIdentifier = createExpectedIdentifier(wrapperSDK: "my-wrapper-sdk", version: "1.0.0")
 
     for request in testHTTPExecutor.requests {
-        XCTAssertEqual(request.allHTTPHeaderFields?["Ably-Agent"], expectedIdentifier)
+        XCTAssertEqual(
+            request.allHTTPHeaderFields?["Ably-Agent"],
+            expectedIdentifier,
+            "Request \(request.url?.path ?? "") missing expected Ably-Agent header"
+        )
     }
 }

+private func createExpectedIdentifier(wrapperSDK: String, version: String) -> String {
+    return [
+        "ably-cocoa/1.2.39",
+        ARTDefault.platformAgent(),
+        "\(wrapperSDK)/\(version)"
+    ].sorted().joined(separator: " ")
+}

538-621: Enhance agent parameter test robustness.

The agent parameter tests are thorough but could be more robust:

  1. Consider testing with multiple agents to verify correct merging behavior
  2. Add tests for invalid agent formats
  3. Verify behavior when params exceed size limits
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📥 Commits

Reviewing files that changed from the base of the PR and between 6239f6d and 5a803d9.

📒 Files selected for processing (1)
  • Test/Tests/WrapperSDKProxyTests.swift (20 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (6)
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🔇 Additional comments (1)
Test/Tests/WrapperSDKProxyTests.swift (1)

5-7: Well-organized test structure!

The tests are excellently organized with clear MARK sections, consistent naming patterns, and well-structured Given/When/Then blocks, making the test file easy to navigate and understand.

Also applies to: 77-78, 188-189, 536-537

@lawrence-forooghian
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Test failures unrelated to changes; merging.

@lawrence-forooghian lawrence-forooghian merged commit 2a6e3dd into main Feb 19, 2025
5 of 8 checks passed
@lawrence-forooghian lawrence-forooghian deleted the 2028-bring-in-line-with-wrapper-sdk-proxy-spec branch February 19, 2025 12:03
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Bring in line with spec for wrapper SDK proxy
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